The first of Apple's big iPhone OS 4 announcements was multitasking, and the first set of multitasking announcements were APIs to let streaming music (think internet radio), location services (think navigation, check-in games, social networks), and VoIP services (think internet telephony) register threads in the background. For users this means you can keep listening to your songs, getting your turn-by-turn directions, and answering your virtual phone all while surfing the web or playing a game.

To find out what it means for developers, we asked some. Read what they had to say after the break!

Regarding rumors of Adobe preparing to sue Apple

Just when you think the internet can't take any more crazy it laughs, loosens its belt another notch, and unleashes something like ITWorld's story about Adobe getting ready to sue Apple over the iPhone's lack of Flash support or the iPhone OS 4 SDK prohibiting cross-compilers, or Canada winning Olympic hockey, whatever.

TiPb Give-Away: 15 MusicSkins for iPad

MusicSkins, who makes some of the hottest skins around, has just unveiled their new line up for the iPad. Among the high quality, perfectly rendered skins are some of your favorite artists including The Beatles, Black Eyed Peas, Jay Z, AC/DC, Rihanna, Madonna, Bob Marley, The Grateful Dead, Kiss, Linkin Park, Taylor Swift and more. They're easy to apply to the back of your iPad so you can get just the custom look you want.

What's more -- to celebrate the unveiling, MusicSkins has kindly offered to give away 15 of their MusicSkins to our TiPb readers! Just head on over the the TiPb Forums and tell us which MusicSkin you most want for your iPad. (Check the link above to see the selection).

The give away starts now and ends Sunday, April 18th at 12pm PST. We’ll randomly pick the winners and let you know via PM (so be sure to check your messages!).

iPhone OS 4: iPod application includes hidden automobile integration

Another gem of a feature has been discovered in iPhone OS 4 - dedicated support for in-car systems. This new feature allows an iPhone or iPod to generate an on-screen menu that is fed via a video out to your car using IAP (iPod Accessory Protocol). Your device then becomes a remote control.

Now with some states banning the use of cellphones while driving we are not too sure how good of an idea this is for anyone but passengers. Regardless, it suggests that Apple may soon introduce their own car kit. The ability to connect our iPhone or iPod (or iPad) to a car-kit to gain full access to the vehicles complete audio libraries sounds pretty cool to us.

Would any of you be interested in a Apple Car-Kit? Sound off in the comments!

Case-Mate Hybrid Case for iPhone 3GS and iPhone 3G

If you have been in search of a tough case that offers dual layer protection while keeping a slim profile the Case-Mate Hybrid Case for iPhone 3GS and iPhone 3G [iMore Store Link - $29.95] may just be the case you have been looking for. For the full review follow us after the break!

Where did file sharing go in iPhone 3.2 and will it come back for iPhone OS 4?

9to5Mac casts a spotlight on the file sharing feature shown off during Apple's iPad Announcement event back in January as part of iPhone 3.2 for iPad... and how it was mysteriously gone come launch day, April 3.

Given the current kluge that is getting files onto and off of the iPad file sharing seems like a fairly important feature to suddenly go missing.

Updated: Apple releases New MacBook Pros [Apple Online Store down!]

UPDATE: Nothing for iPhone, iPod touch, or iPad owners to see here... unless you're also in the market for new Core i5/i7 MacBook Pros. Apple's got your press release and new MacBook Pro product pages ready. Now how about those international iPad pre-orders?

Opera Mini for iPhone Approved, in App Store now

Opera has just announced that their Opera Mini browser for iPhone has been approved [Free - iTunes link]. According to Engadget, it's already popping up in some international App Stores and should/could be in your App Store any time now. Update: looks like it's live now, go get it!

Opera Mini likely received approval because it's not an actual web rendering, JavaScript processing engine like Safari (or Firefox, IE, Chrome, etc.) but a proxy-browser. All the rendering and processing is done on Opera's servers and then compressed and sent to the app for display.

This also means it doesn't use as much data, and can thus usually display web pages faster and with slower data connections than a full-on browser -- especially useful for people on roaming data rates or on EDGE connections.

It breaks SSL encryption by necessity however (https sites), so while you may want to use it to traveling the outskirts, you'll like want to avoid it when mobile banking downtown.

(You also might want to use it for it's on-page text search feature -- something even iPhone OS 4 still lacks.)

Let us know when Opera Mini appears in the App Store for you, and if you try it, what you think of it. Video of Dieter checking out the pre-release version after the break!

Adobe announced the complete CS5 suite of apps as well, including Photoshop, Illustrator, and Premiere, but the mobile world's attention remained fixed on Flash CS5 and the escalating war of words on the interwebs. While many developers are understandably upset with Apple, the countervailing trend from an Apple point of view is lining up behind the "control" and "quality" arguments. Apple doesn't want to lose control of the iPhone platform to Adobe any more than it does to Google. It wants to release the OS it wants, when it wants, and not have to worry about third-party warlords holding it, and large percentages of its app user base, hostage.

Quick Review: LogMeIn Ignition for iPad

If you've been using LogMeIn Ignition for iPhone, prepare to be blown away by the iPad version. LogMeIn Ignition for iPad [$29.99- iTunes Link]has essentially the same functionality as the iPhone, but is much faster.

LogMeIn is a free service (with paid options depending on what you want) that works on a Mac or PC. It allows you to remotely control another computer. LogMeIn Ignition brings that functionality to iPhone and iPad. You have full right and left-click support as well as most all of the other useful key functions such as your "F" keys and arrows keys. If performance is an issue, you have complete control from the settings screen to change resolution and color quality. I tend to use Compressed; it is a step above Black and White and allows for a faster refresh. You can also change how you navigate on screen. You have two choices: screen moves or mouse moves. I lean towards screen moves as that gives me the most speed when navigating. Pinch to zoom works like a charm and is blazingly fast.

Ready for the bonus? LogMeIn Ignition is a Universal app, so you buy once and you can use it on iPhone, iPod Touch and iPad. For those that need a little extra power in their remote sessions, LogMeIn offers their Pro2 account which allows for even more flexibility such as copy/paste desktop sharing and remote printing between sessions. If you aren't sure which works best for you, there is a handy comparison chart.

I can't recommend LogMeIn Ignition enough. It's come in very handy when having to access my home computer.. and even my Mother-In-Law's PC for help. There are several VNC type of clients out there, but this one is fast, zero setup (compared to a VNC configuration) and has plans to meet your needs.

Palm up for sale -- should Apple buy before HTC does?

Reports are swirling around the internet that smartphone pioneer Palm is putting itself up for sale, with rumored suiters that include HTC and Lenovo.

After bringing in former Apple iPod lead Jon Rubinstein and members of Apple's iPhone team, Palm went from an aging PalmOS platform to the ultra-modern webOS which leapfrogged other platforms in several key areas like multitasking, notifications, and social integration. Problems with timing and hardware, however, prevented them getting the traction they needed in the market and led to slower than expected sales.